Falco, Marth and Captain Falcon because I played them in Brawl as well, and it was slightly easier to pick them up when I started playing Melee. But I'm crap with them so I only use them in friendlies now.
Mewtwo because I am a huge fan of Pokemon and Pikachu/Jiggs/Pichu just didn't feel natural to me. Also because it seems nobody can sdi Nair.
Ganodorf because I was playing friendlies with this guy at my first tournament and ganondorf was the only character I could win with. (which is wierd because I'd never him before that day)
Mewtwo because I am a huge fan of Pokemon and Pikachu/Jiggs/Pichu just didn't feel natural to me. Also because it seems nobody can sdi Nair.
Ganodorf because I was playing friendlies with this guy at my first tournament and ganondorf was the only character I could win with. (which is wierd because I'd never him before that day)